In the end, thanks to the weird way that the frozen grizzlies positioned themselves to guard the mountain, and because of the darkness of the night, Jake had a hard time finding the dungeon entrance. They didn't stay in a single place and in large numbers, but Jake realized that it was a pretty efficient way to form many lines of defense and pick the enemies out off the guard. Fortunately, things improved a bit when morning came, and then Jake finally managed to see a cave around two hundred meters away from the base of the mountain. When he decided to check it, he found many piles of snow where the frozen grizzlies suddenly appeared from.
"Jackpot, huh," Jake said while he was moving away and preparing his shurikens to hit the enemies.